percentilerawkll

This section contains reference documentation for the PERCENTILERAWKLL function.

Raw variant of the PERCENTILEKLL which returns a Base64 encoded string of the KLLSketch object. The response can be deserialized back to a KLLSketch using Apache Datasketches library and used to do further analysis. For example you can use this approach to calculate the CDF (Cumulative Density Function) or PMF (Probability Mass Function) of a dataset.

Signature

PercentileRawKLL(column, percentile, kValue) -> Double

  • column (required): Name of the column to aggregate on. If the column is a multi value column, use PERCENTILERAWKLLMV variant.

  • percentile (required): Percentile value to be calculated [0..100]. For 'raw' versions of the function, this value is used for ordering (ORDER BY).

Usage Examples

select percentileRawKll(ArrDelayMinutes, 90) as sketch
from airlineStats
sketch

BQEPC...

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